Although laryngomalacia is the leading cause of stridor in infancy, vocal cord paralysis, despite its low incidence, is still the second most common cause.

摘要喘鸣一岁以下的婴幼儿呼吸窘迫常见的主诉，软最常见的原因。

Laryngomalacia is the most common etiology of non-infectious molluscum in infancy.Endoscopic morphology revealed abnormal droop of sub-glottis structures in inhale.

软婴儿期最常见的非传染性喘鸣的病因,内镜检查显示,吸气时声门上有异常的下垂。